Consider a spatial curve in three-dimensional space given in parametric form by ? ? ? ? ? ? 2 x t…

Consider a spatial curve in three-dimensional space given in parametric form by ? ? ? ? ? ? 2 x t cost, y t sin t,z t t, 0 t 2 ? ? ? ? ? ? ? The length of the curve is ______. A triangular facet in a CAD model has vertices: P1(0, 0, 0); P2(1, 1, 0) and P3(1, 1, 1). The area of the facet is (A) 0.500 (B) 0.707 (C) 1.414 (D) 1.732